This crate implements shell style file name generation a.k.a.: globbing.
The provided globber can expand globs relative to a specified directory (or
just the current working directory). filenamegen tries to avoid
walking down paths that will never match a glob in order to reduce
pressure on the underlying filesystem.

This simple example recursively finds all of the rust source files under
the current directory.

Represents a compiled glob expression.
Depending on the pattern, evaluating the glob may use a conservative
walker that tries to minimize the number of syscalls to just the
directories in which pattern matching needs to occur.
If the recursive glob ** pattern is used then we have no choice
but to perform a full tree walk for the appropriate portions of
the filesystem.